<?
if (!extension_loaded('gd')) {
	error('GD Extension not loaded.');
}

class IMAGE {
	var $Image = false;
	var $FontSize = 10;
	var $Font = '';
	var $TextAngle = 0;
	
	function create($Width, $Height) {
		$this->Image = imagecreate($Width, $Height);
		$this->Font = SERVER_ROOT.'/classes/fonts/VERDANA.TTF';
		if(function_exists('imageantialias')){
			imageantialias($this->Image, true);
		}
	}
	
	function color($Red, $Green, $Blue, $Alpha=0){
		return imagecolorallocatealpha($this->Image, $Red, $Green, $Blue, $Alpha);
	}
	
	function line($x1, $y1, $x2, $y2, $Color, $Thickness = 1){
		if($Thickness == 1){
			return imageline($this->Image, $x1, $y1, $x2, $y2, $Color);
		}
		$t = $Thickness / 2 - 0.5;
		if ($x1 == $x2 || $y1 == $y2) {
			return imagefilledrectangle($this->Image, round(min($x1, $x2) - $t), round(min($y1, $y2) - $t), round(max($x1, $x2) + $t), round(max($y1, $y2) + $t), $color);
		}
		$k = ($y2 - $y1) / ($x2 - $x1); //y = kx + q
		$a = $t / sqrt(1 + pow($k, 2));
		$Points = array(
			round($x1 - (1+$k)*$a), round($y1 + (1-$k)*$a),
			round($x1 - (1-$k)*$a), round($y1 - (1+$k)*$a),
			round($x2 + (1+$k)*$a), round($y2 - (1-$k)*$a),
			round($x2 + (1-$k)*$a), round($y2 + (1+$k)*$a),
		);
		imagefilledpolygon($this->Image, $Points, 4, $Color);
		return imagepolygon($this->Image, $Points, 4, $Color);
	}
	
	function ellipse($x, $y, $Width, $Height, $Color){
		return imageEllipse($this->Image, $x, $y, $Width, $Height, $Color);
	}
	
	function text($x, $y, $Color, $Text){
		return imagettftext ($this->Image, $this->FontSize,$this->TextAngle, $x, $y, $Color, $this->Font, $Text);
	}
	
	function make_png($FileName = NULL){
		return imagepng($this->Image, $FileName);
	}
	
	
}
?>
